Phase separation in Pr0.7Ca0.3MnO0.3: a case of weak quenched disorder
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چکیده
منابع مشابه
Spinodal phase separation in liquid films with quenched disorder.
We study spinodal phase separation in unstable thin liquid films on chemically disordered substrates via simulations of the thin-film equation. The disorder is characterized by immobile patches of varying size and Hamaker constant. The effect of disorder is pronounced in the early stages (amplification of fluctuations), remains during the intermediate stages and vanishes in the late stages (dom...
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The nature of phase separation in Pr(0.5)Sr(0.5)MnO(3) has been probed by linear, as well as nonlinear, magnetic susceptibilities and resistivity measurements across the second order paramagnetic to ferromagnetic transition (T(C)) and first order ferromagnetic to antiferromagnetic transition (T(N)). We found that the ferromagnetic (metallic) clusters, which form at T(C), continuously decrease t...
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Recent experimental and theoretical efforts have focused on using liquid-crystal systems as a test bed for understanding the statistical mechanics of quenched random disorder. In particular, the weakly first-order isotropic to nematic (I–N) and the second-order nematic to smectic-A (N–SmA) phase transitions have been intensely studied under two, topologically distinct configurations: (I) confin...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2004
ISSN: 1367-2630
DOI: 10.1088/1367-2630/6/1/195